Picnic table



FIG. 1 is a perspective view of the picnic table showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a side elevation view thereof; and,

FIG. 5 is a rear elevation view thereof.

The broken lines in the figures represent portions of the picnic table that form no part of the claimed design. 

CLAIM The ornamental design for a picnic table, as shown and described. 